What plant hardiness zone is Sankt Radegund bei Graz

Sankt Radegund bei Graz is located at Graz-Umgebung, Styria (Steiermark) (STM), Austria.

Plant hardiness zone (winter frost zone or gardening zone) for Sankt Radegund bei Graz is 6b by the USDA scale.

Coldest zone's winter temperature is −20.6 … −17.8 °C.

Plants of 6b USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 6b USDA.

Alternative climatic zone of gardening for Sankt Radegund bei Graz by UK RHS scale is H6.

Plants of H6 RHS hardiness zone suitable for outdoor gardening and growing in this winter frost zone H6 RHS.

Sankt Radegund bei Graz @ wikipedia.

* The lowest temperature in Sankt Radegund bei Graz was -19.5 °C on 01/03/2018.